LANDMARKA now includes
865-868MHz frequency band.

The LANDMARKA range now
covers the 867MHz band as well as the 433MHz and 458MHz low power
telemetry bands. Customer requests fuelled the need to
accommodate these alternative frequencies due to the increasing
use of temporary traffic lights.

Unfortunately poor design
of traffic lights radio systems has resulted in increasing
interference in the 458MHz band, often in a 3km radius. This is
due to the constant carrier signal that is used - a technique
much maligned throughout the earlier days of low power radio
development. This current application would seem to be a step
backwards.

However, for those users
who find this a problem the alternative frequencies are directly
compatible in every way - same functionality, same case sizing,
same power supplies - so they are a true alternative
implementation.